<template>
   <div>
     <nav-bar class="detail-nav">
       <img slot="left" class="back" @click="backClick" src="~assets/img/common/back.svg">
       <div slot="center" class="title">
         <div v-for="(item,index) in titles" :key="index" 
         class="title-item" :class="{active:index === currentIndex}"
          @click="titleClick(index)">{{item}}</div>
         </div>
     </nav-bar>
   </div>
</template>

<script>
import NavBar from 'components/common/navbar/NavBar'
export default {
  name:"DetailNavBar",
   data () {
      return {
        titles:['商品','参数','评论','推荐'],
        currentIndex:0
      };
   },

   components: {
     NavBar
   },

   computed: {},

   methods: {
     titleClick(index){
       this.currentIndex = index;
       this.$emit('titleClick',index)
     },
     backClick(){
       this.$router.go(-1)
     }
   }
}
</script>
<style  scoped>
.detail-nav{
  background-color: #ffffff;
}
.title{
  display: flex;
  font-size: 14px;
}
.title-item{
  flex: 1;
}
 .title-item.active {
    color: var(--color-high-text);
  }
   .back{
    margin-top: 12px;
  }
</style>